The Senators stole one. They lost the expected-goals battle 2.55–3.62 and won anyway.
The Senators won 3-0 despite being thoroughly outshot in expected goals: 2.55 to 3.62. This was a heist.
The Islanders controlled 59% of the xG at 5v5, took 23 shot attempts on goal to Ottawa's 16, and generated eight high-danger chances to the Senators' two. None of this mattered. L. Ullmark stopped all 23 shots he faced—a perfect 1.000 SV%—and saved 3.62 goals above what the xG model predicted. The Islanders underperformed their expected goals by 3.62, unable to convert a single high-danger chance (0 for 8).
I. Sorokin kept New York in the game (13/15 saves, 0.867 SV%), but the problem wasn't goaltending. It was Ottawa's efficiency.
The Senators were lethal on the rush, scoring two goals on just 15 such chances. When play tightened, the Islanders generated four rebound opportunities but capitalized on zero. Ottawa created three and finished one.
Michael Amadio scored on a wrist shot from the doorstep at 17:29 of the third period, putting the game away. In a matchup where New York controlled play at even strength, every marginal advantage broke Ottawa's way.

